Britney Spears

Britney Spears's On-the-Go Wardrobe Change

By Mark Dagostino

02/13/2007 at 10:20 AM EST

When Britney Spears regrets her choice of outfit, she knows how to improvise.

The singer, 25, who has been making the social rounds in New York City this month, arrived with a group of girlfriends at the downtown hot spot ONE on Sunday night wearing a micro-mini red dress.

"But she was complaining that she didn't like it and wanted to change," a source tells PEOPLE.

Lucky for her, Sunday nights at ONE feature go-go dancers clad in fishnets and bikinis. "So she called the dancers over to talk to them, she said, because she really liked those fishnet stockings," the source says.

The flattered dancers brought Spears downstairs to their dressing room to try on some of their outfits.

A few minutes later, "Britney came upstairs in a dancer bikini and a white busboy jacket. And that's what she walked out wearing."

Although Spears sipped champagne at the club, her evening was relatively mellow, says the source. "She just hung out with these two dancers all night and kind of befriended them. She was trying on all their outfits and left in a bikini and fishnets. That's it."

The New York Post's Page Six also reported the story, and said reps for Spears did not return calls for comment.